Tavakolian, Mehrzad, Hassan Asadzadeh, Seyed Ali Hosseini-Almadani, and Ali Jalili Shishvan. 1405. “The Effect of Content-Related and Unrelated Humor on Academic Achievement Among Fourth-Grade Elementary Male Students”. Health Psychology and Behavioral Disorders 4 (3): 1-14. https://www.jhpbd.com/index.php/hpbd/article/view/252.